期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 112, 期 38, 页码 14696-14701出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp8054685
关键词
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资金
- U.S. DOE [DE-AC02-98CH10886, DE-FG02-03ER15476]
- University of Pittsburgh
- U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-AC02-98CH10886]
- Synchrotron Catalysis Consortium [DE-FG02-05ER15688]
This letter reports the synthesis of a new type of noble metal/noble metal hybrid (Pt/Au hybrid nanowires) via galvanic replacement reaction between Pt nanowires and AuCl3. The width of nanowire component is about 2.3 +/- 0.2 nm wide, and the diameter of Au component is about 4.5 nm +/- 0.8 nm. More interestingly, by using X-ray absorption spectroscopy technique, charge transfer upon hybrids formation was observed, that d-charge depletion occurred at the Pt site, accompanied by d-charge gain at the Au site. The reported methodology to synthesize Pt/Au hybrid nanowires and study of electronic structure of Pt/Au hybrids will be of great importance in catalysis and materials science.
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